How to really SPEED UP your firefox.

In your firefox URL bar, type in

about:config

In the filter bar type:

network.http.pipelining (change it to true)

network.http.pipelining.maxrequests (change it to 20)

network.http.proxy.pipelining (change it to true)

network.dns.disableIPv6 (change it to true)

plugin.expose_full_path (change it to true)

layout.spellcheckDefault (change it to 2)

browser.cache.memory.capacity (change to 16384)

Now your Firefox will now be 3 - 30 times faster in loading pages.

http://www.ubuntugeek.com/speed-up-firefox-web-browser.html